1. When you're trying to take a dump while
on the phone, you claim you're "
lifting something heavy" in order to explain the
grunting.
2. This phrase can also be used as a euphemism for that act in other situations.
1. MAN 1: (
grunting)
MAN 2: "Dude, are you shitting while we're on the phone?"
MAN 1: "No, I'm just lifting something heavy."
2. MAN 1: "Where are you going?"
MAN 2: "
I'll be back in a few minutes. I have to
lift something heavy."